Gas-engine cylinder.



E. T. ADAMS.

GAS ENGINE CYLINDER.

APPLICATION FILED MAY 9, 1908.

1,045,766, Patented Nov 26, 1912.

WITNESSES I M INVENTUR.

lzfi/ M4 y ATTURNEY.

TINTTED STATES PATENT OFFICE.

EDW'ARD T. ADAMS, 0F MILWAUKEE, WISCONSIN, ASSIGNOR TO ALLIS-CI-IALMERSCOMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF NEW JERSEY.

GAS-ENGINE CYLINDER.

Specification of Letters Patent.

Patented Nov. 2c, 1912.

7 Application filed May 9, 1908. Serial No. 431,828.

To all whom it may concern:

Be it known that I, EDWARD T. ADAMS, a citizen of the United States,residing at Milwaukee, in the county of Milwaukee and State ofVisconsin, have invented a certain new and useful Improvement inGas-Engine Cylinders, of which the following is a specification.

This invention relates to engine cylinders and is specificallyillustrated and described as a gas engine cylinder.

The object of the invention is to produce a cylinder comprised ofsections of diflerent materials so that each section is best adapted andmost easily constructed for the purpose for which it is intended.

Another object of the invention is to so connect these parts that thestrain of the connection will fall upon through bolts and thus obviatethe necessity of flange connections by stud. bolts or otherwise.

In the drawings,Figure 1 is a central section through the cylinder andparts of the engine frame, certain of the bolt connections being swunginto the plane of section for purposes of better illustration and location of the radial distance from the axis. Fig. 2 is a transversesection through the middle portion of the cylinder, certain of the partsbeing broken away and an outer half of such middle portion being omittedentirely. Fig. 3 is a fragmental sectional view of a portion of theframe looking toward the cylinder.

Referring to the drawings, the cylinder is composed of portions ofdifferent material, the middle portion 1 of which is composed of twoseparate cylinders 2, 3, the outer one of which is composed of twosemicylinders bolted together at flanges formed on their edges, as shownin the drawings. This outer cylinder 3, may be made of cast iron. Themiddle portion 1 is preferably formed of relatively tough wear-resistingmaterial such as steel.

At the ends, the engine cylinder is comprised of portions 4, 5, whichcoact and are in line with the middle portion 1, all three of theseportions being suitably formed end to end so as to produce a tightjoint. Gasket material may be used at these joints if desired. Theportions 4, 5, are made of relatively weaker material, such forinstance, as cast iron, and these can therefore be readily replaced incase of breakage or defect. This will avoid the necessity of renewing orreplacing the entire engine cylinder. The portions 1, 4, 5, are heldtogether end to end in a firm and suitable manner by long through bolts6, and these preferably also include the terminal flanges 7 8, all partsof the engine frame. The engine cylinder is thereby firmly clampedbetween these parts of the engine frame. The parts of the engine frameare additionally secured to the cylinder by stud bolts 9, 10, screwinginto the portions 4, 5, of the engine cylinder.

The usual piston 11, mounted on the piston rod 12, slides within thecylinder in contact with the middle portion 1. The tough wear-resistingquality of the middle portion 1, therefore tends to resist thewear dueto friction between these parts. The usual heads 13, 14, are providedand these are firmly secured to the port-ions 4, 5, respectively ofthe'cylinder by means of stud bolts 15, 16. The portions 4, 5, of thecylinder are provided with inlet ports 17, 18, and outlet ports 19, 20,as is usual in gas engine cylinder construction.

It should be noted that the cylinderis constructed to provide for waterjacketing, that is the cylinder has hollow walls. This is done in thepresent case by coring out the end portions 4, 5, and by using theseparate cylinders 2, 3, to coact with the end portions 4, 5, asheretofore described.

It should be understood that it is not desired to be limited to theexact details of construction shown and described, for obviousmodifications will occur to a person skilled in the art.

It is claimed and desired to secure by Let-- ters Patent,

1. In an engine cylinder, the combination of a cylinder propercomprising three transverse portions abutting together at substantiallytwo planes, the mid portion comprising an inner piece of relativelytough wearresisting material and an outer cylinder in sections, and theouter cylinder and end portions being of relatively weaker material, andthrough bolts for clamping the portions together.

2. In an engine cylinder, the combination of a cylinder propercomprising three transverse portions abutting together at substantiallytwo planes, the mid portion comprising an inner piece of relativelytough wearresisting material and an outer cylinder in sections, and theouter cylinder and end por- In testimony whereof, I affix my signaturetions being of relatively Weaker material, in the presence of tWoWitnesses. frame portions abutting said outer port-ions, EDWARD T ADAMSa piston sliclable in the inner piece of the mid portion, and throughbolts for clamping WVitnesses:

together the portions of the cylinder and the G. F. DEWEIN, .frameportions. D. P. DAVIES.

. Copies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

Washington, D. G. i

